不卡视频一区二区三区,婷婷成人av,国产精品一区视频,久久夜色精品国产噜噜av小说,国产精品性夜天天视频,亚洲日产永久经典,九九国产精品入口麻豆

Casus Products>> Casus

  The Q10B23M-C produced by XINGTAI STEEL has the advantages of high purity, good surface quality, small depth of decarbonization layer, low cracking rate of cold heading, high strength and good hardenability after heat treatment. It is mainly used to make high-strength automobile fasteners. A customer of XINGTAI STEEL using the product to make automobile bolts, reflecting the product quality stability, meet the final product use requirements.